Key Benefits
- Essential for thyroid hormone metabolism
- Powerful antioxidant as part of glutathione
- Supports immune function
- May support fertility
- Protects against oxidative stress
What is Selenium?
Selenium is a trace mineral that's essential for human health in small amounts. It's incorporated into selenoproteins, which have important antioxidant and metabolic functions throughout the body.
Thyroid Function
Your thyroid gland contains the highest concentration of selenium in your body. Selenium is required for enzymes that convert T4 (inactive) to T3 (active thyroid hormone) and protect the thyroid from oxidative damage during hormone production.
Glutathione Peroxidase
Selenium is a key component of glutathione peroxidase, one of your body's most important antioxidant enzymes. This enzyme protects cells from damage caused by free radicals and helps regenerate vitamin C.
Immune Support
Selenium influences both innate and adaptive immune responses. Deficiency is associated with impaired immune function and increased susceptibility to viral infections, including increased virulence of some viruses.
Geographic Variation
Selenium content in food depends on soil levels, which vary dramatically by region. Brazil nuts are the richest source—just 1-2 nuts can provide your daily needs. Other sources include seafood, organ meats, and grains.
Disclaimer: This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Always consult with a qualified healthcare provider before starting any new supplement regimen.